Technology answer

Checkly

117

companies run it, <0.01% of 54,527,857 in the index. Landing 12 Sept 2026.

Hosts: 154 live hosts run it, of 191,809,695 hosts in the index, <0.01%. A host is a website, not a company.

Companies by month

No published series

117 companies is under the publication floor of 1,000, and the fixed panel anchored at 31 Dec 2020 carries 45 of them. A monthly line drawn off that many observations would be noise at the same weight as a line off millions, so this page states the count and its date and publishes no series.

First discovered 23 Mar 2025, last discovered 31 Aug 2026.

Both denominators, and a third

Shares of the same 117each row a different wholelanding 12 Sept 2026

Denominator

Companies

Share

companies in the index

54,527,857

<0.01%

companies running anything in Observability

6,762,151

<0.01%

companies running anything in Synthetic and uptime monitoring

16,616

0.70%

Three wholes, three shares of one count: a share travels with its whole, never alone. Against the last of them, Checkly is rank 12 of 23 technologies in Synthetic and uptime monitoring.

Open as a segment

117 companies; add a country, a sector or a band on the segment page. Counting is free.

/companies/tech-checkly

Open the segment

Catalogue record

As recorded in the cataloguetaxonomy release tax-2026.10last discovered 31 Aug 2026

A synthetic monitoring service for APIs and web apps.

Checkly provides API checks and browser-based synthetic tests with alerting and dashboards. Engineering teams use it to monitor uptime and user flows from the cloud.

Kindproduct

VendorCheckly, checklyhq.com

PathInfrastructure and Hosting > Observability > Synthetic and uptime monitoring

Slugcheckly

Deploymentsaas

Pricingfreemium, subscription, usage based

Open sourceno

First discovered2025-03-23

Last discovered2026-08-31

Taxonomy releasetax-2026.10

One click under this answer

Subcategory answerSynthetic and uptime monitoringCompanies running anything in Synthetic and uptime monitoring, 16,616 of 54,527,857 in the index, and the technologies ranked in it.Category answerObservabilityThe category above this one, with its subcategories and the companies in each.CatalogueAll 8,177 technologiesRanked by the companies running them, with the publication gate named and the long tail drawn.